What latest version enables Import obj?

[Svetnyy1]

I want to get started on modding Elder Scrolls Skyrim Special Edition but I'm having troubles with the importing portion of the program.

I had to download a previous version because the latest version has not implemented the Import obj. feature yet. But I want to know which of the latest versions have this feature because I've received an error loading a nif file:

""warning: block 6 (BSTriShape) not inserted!""
""device position incorrect after block number 6 (BSTriShape) at 0x4eb ended at 0x4eb (expected 0x1bdb)""
""array Roots invalid""
""device position incorrect after block number 7 (BSEffectShaderProperty) at 0x1bdb ended at 0x1bdf (expected 0x1c51)""
""array Roots invalid""
""device position incorrect after block number 8 (NiAlphaProperty) at 0x1c51 ended at 0x1c55 (expected 0x1c60)""
""warning: block 9 (BSTriShape) not inserted!""
""device position incorrect after block number 9 (BSTriShape) at 0x1c60 ended at 0x1c60 (expected 0x3350)""
""device position incorrect after block number 10 (BSLightingShaderProperty) at 0x3350 ended at 0x3350 (expected 0x33b8)""
""device position incorrect after block number 11 (BSShaderTextureSet) at 0x33b8 ended at 0x33b8 (expected 0x3441)""
""device position incorrect after block number 12 (NiAlphaProperty) at 0x3441 ended at 0x3441 (expected 0x3450)""
""warning: block 13 (BSTriShape) not inserted!""
""device position incorrect after block number 13 (BSTriShape) at 0x3450 ended at 0x3450 (expected 0x905c)""
""device position incorrect after block number 14 (BSLightingShaderProperty) at 0x905c ended at 0x905c (expected 0x90c4)""
""device position incorrect after block number 15 (BSShaderTextureSet) at 0x90c4 ended at 0x90c4 (expected 0x918c)""
""warning: block 16 (BSTriShape) not inserted!""
""device position incorrect after block number 16 (BSTriShape) at 0x918c ended at 0x918c (expected 0xc3d8)""
""device position incorrect after block number 17 (BSLightingShaderProperty) at 0xc3d8 ended at 0xc3d8 (expected 0xc440)""
""device position incorrect after block number 18 (BSShaderTextureSet) at 0xc440 ended at 0xc440 (expected 0xc4fc)""

Put it in short, the BSTriShape is missing which means the object isn't appearing. Without BSTrishape or whatever Trishape it's suppose to say, I cannot get the mesh of my custom weapon to load. Can anyone help me with this?